In a recent study, the use of HEPA filters was shown to significantly improve a key measure of cardiovascular health in healthy, non-smoking elderly individuals after only two days.
Reduction of air particles was shown to improve microvascular function (MVF). Indoor air filtration could, therefore, be a feasible means of reducing cardiovascular risk.
Abnormal MVF is known to be a predictor of dangerous and possibly fatal cardiovascular events.
HEPA filtration removes about 60 percent of the air particles in homes, and was associated with an 8.1 percent improvement in MVF.